The expansion of water water is our company carefully developed and combined with the information at home and abroad, development and production of new waterproof sealing sealing material with the production of products, this product is suitable for air defense, basement, sewage treatment works, underground railways, tunnels, water storage tank, and the mixed concrete project construction joints, expansion joints crack, etc.. The product expansion rate in static distilled water volume (%) can be divided into: not less than 150% and not less than 220% and more than 300% other types. This product has been listed in the third part of GB/T18173.3-2002 polymer waterproof material, and it was implemented in August 1, 2002.
Water swelling seal a seal with imported special rubber, inorganic absorbent material, high viscosity resin and so on more than ten kinds of materials by mixing, mixing, extrusion and to into product, it is a section developed on the foundation of foreign product is a square shaped strip of water swelling self-adhesive type seal. Relying on its own viscosity directly paste preset in the concrete construction joint, the interface of the pouring seam, after pouring concrete two times (that is wrapped by concrete).
To meet the water will gradually expand, on the one hand, there may be clogged pores on the other hand, the concrete interface contact more closely, resulting in high water pressure resistance, the formation of impermeable plastic sealing colloid, the product has high inflation rate, mobile complement strong in construction joints, after cast with balanced self-healing function strong self sealing seam, settlement due to the emergence of new small gap, has completed the project, such as the gap Water Leakage by the water infiltration, re plugging, using the seal of low cost and simple construction process, the best corrosion resistance.
My company&＃39;s seal, sealing belt series products in Beijing in June 1988 by the Ministry of science and technology achievements appraisal, won the 1991 National Award, in order to solve the concrete construction joints, pouring seam leakage problems and create a new way to fill a gap in waterproof materials in china. Product quality has reached the world&＃39;s leading level. Over the past few years through more rigorous analysis, scientific experiments and solicit suggestions of users, we have developed BW- type and BW- type expansive water grouting, BW- type water (slow expansion) the expansion of water water, BW- type IV (slow expansion seal) a type of grouting, grouting, hollow and mesh type water swelling seal products such as water swelling, formed a more perfect product to stop to different engineering conditions.
Product features of water expansion sealing strip:
This product has swelling, "water seal" effect; expansion speed is slow, the expansion rate is less than or equal to the maximum flooding 186h expansion rate of 50%; the product is convenient installation, low cost and no pollution in the long time immersion under no dissolved precipitation; and other pro water expansion waterstop compared to the largest it is the expansion of the hydrophilic respectively by long-term repeated expansion is still not lost.
Suggestions on installation construction of water expansion expansion strip:
1, in the installation of reserved type of paste, prior to pouring concrete need to reserve a stop bar slot (can be nailed in the template reserved wood). After the concrete template is removed, the surface is removed, so that the joint surface is waterless, clean and without debris.
2. Insert the stop bar into the reserved tank. If the groove is not reserved, the vertical joint can be added with adhesive, the whole length is pasted, or the cement nail and the wood strip are used for fixing the water stop strip; the horizontal joint can be directly pasted on the concrete surface. The concrete should be poured as soon as possible after the stop bar is pasted. In the process of installation and sticking, the expansion strip should be prevented from being polluted and expanded by water, so as to avoid the effect of the use of the scene.
3. The product is preset on the interface of the concrete construction joint and the post pouring joint. After two times pouring concrete (that is wrapped in concrete), the water expansion can completely block and obstruct the leakage water source. High expansion ratio, strong mobile supplement. The water stop strip, which is placed in the construction joint and the post pouring joint, has a strong balance self-healing function, and can automatically seal the new micro cracks due to settlement.
4, for the completion of the project, if the gap leakage, the use of the water seal to re plugging.